Its a fun souvenir. I always stay off site and have been using a Magic Band since you could use a MB.
For my last trip, I bought everyone in my family a MB of their choice (6 people), my SIL and brother took over a day to decide what they wanted, and they were getting so annoyed with pulling out their cards for FP+ (especially since I make every effort to FP+ every ride). So they were very happy when they finally found what they wanted at the end of day 2. (they ended up using the create your own to get Baby Yoda and The Mandolorian)